The Thomas Clark Professional Papers (1950-1998) contain materials from his tenure as a Professor of English at the University of Nevada, Las Vegas (UNLV), which are divided into two series. The gaming research series includes newspaper clippings, correspondence, brochures, bulletins and articles. Also included are book chapters, a glossary of terms used in the casino industry, and gambling guides. In the linguistics and teaching series there are research files, articles, speeches, correspondence, interviews, multimedia, workshops, and conference materials. Also included are files on graffiti, symbolism, ethnic and regional speech differences, language usage, and National Council of Teachers of English (NCTE) material. Additional materials include colleague publications and cassette tapes of interviews from students in courses Clark taught at UNLV.

The Margo Mansergh Papers (approximately 1920-2010) document the life of former showgirl and dancer Margaret "Margo" Mansergh Tomaszewski. Materials include photographs of Margo modeling, backstage at various shows, portraits, and personal family photographs as well as programs from her international career performing in the Lido de Paris and Pigalle Nightclub in London, as well as a number of shows in Las Vegas, Nevada, such as Vive Les Girls, Casino de Paris, Minsky's Burlesque, and Lido de Paris at the Stardust. The collection contains materials from Mansergh's modeling career, including photographs, book covers, and images of her as an extra in films. Digital images from the closing Stardust performance and an event for Miss Bluebell are also found in the collection.